Flight number record
DL 1122
Delta Air Lines · New York to Detroit
- Route
- LGA → DTW
- Departs
- 12:55
- Flights
- 365
- Period
- September 2025 to August 2026
Historical statistics for September 2025 to August 2026, not live status. For today’s DL 1122, check with Delta Air Lines.
DL 1122 lands a B−, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by a little over an hour on average. That rests on 365 flights, with a median arrival 12 minutes early.
Key figures
On time
79.8%
Arrivals under 15 minutes late, of 352 completed flights
Avg delay
78 min
Across delayed arrivals only, not all flights
Cancelled
3.56%
National rate is 1.89%
1 hour+ late
8.5%
National rate is 8.3%
These figures cover 365 flights between September 2025 and August 2026. Beyond the headline rate, 8.5% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Schedule
When DL 1122 flies
DL 1122 flies LGA to DTW without a single fixed slot. Its most common scheduled departure was 12:55, used on 157 of 365 flights, with 13:10 (60 flights) next.
- Departs 12:55157 flights43.0%
- Departs 13:1060 flights16.4%
Scale runs 0% to 100%.
Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.
A 12:55 departure sits in the 11am–2pm window. Across every US flight scheduled in that window the on-time rate is 78.3%, and DL 1122 runs level with that at 79.8%. Midday slots inherit some of the morning's delays without yet carrying the full weight of the evening's.
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Against the route
DL 1122 next to LGA to DTW
Every carrier on LGA to DTW combined arrived on time 77.3% of the time across 3,861 flights, so DL 1122 is 3 points ahead of it. Delta flew 1,982 flights on the same city pair under all its flight numbers, including this one, and those ran 81.0% on time. Across its whole network Delta Air Lines managed 81.1%, close to this flight's figure.
| Compared with | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| DL 1122 | 365 | 79.8% | 78 min | 3.56% | B− |
| All Delta Air Lines on LGA–DTW | 1,982 | 81.0% | 87 min | 4.09% | B− |
| All carriers on LGA–DTW | 3,861 | 77.3% | 83 min | 5.23% | B− |
| Delta Air Lines, whole network | 1,039,517 | 81.1% | 71 min | 1.74% | B |
Across the year
DL 1122 quarter by quarter
DL 1122 did not run the same all year. Its best quarter was Jul–Sep 2025 at 93.3% on time and its weakest Oct–Dec 2025 at 73.3%, a swing of 20 points on roughly 73 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.
- Jul–Sep 202530 flights93.3%
- Oct–Dec 202592 flights73.3%
- Jan–Mar 202690 flights84.5%
- Apr–Jun 202691 flights78.9%
- Jul–Sep 202662 flights77.6%
Scale runs 65% to 100%.
By weekday, DL 1122 did best on Wednesday at 88.0% on time and worst on Monday at 70.0%. Each day rests on about 52 flights, so a gap of 18 points is worth noticing but could still narrow in another year.
Arrival by arrival
How late DL 1122 runs when it is late
DL 1122 often beats the schedule: 149 of 352 completed flights, 42%, arrived 15 minutes or more early. The 71 late arrivals split 22 under half an hour, 19 between 30 and 60 minutes, and 30 an hour or more.
- 15+ min early149 flights42.3%
- Within 15 min132 flights37.5%
- 15–29 min late22 flights6.3%
- 30–59 min late19 flights5.4%
- 1–2 hours late18 flights5.1%
- 2+ hours late12 flights3.4%
Scale runs 0% to 100%.
Share of 352 completed flights by arrival against schedule.
13 of 64 late departures made up the time and arrived on time, 20% of them. In the other direction, 20 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at DTW.
The worst days
Worst days for DL 1122
The latest arrival of the period was on 28 July 2026, 9 hours 23 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. The same cause led on three of the five worst days.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 28 July 2026 | 9 hours 23 minutes | National Airspace System |
| 21 July 2026 | 6 hours 15 minutes | National Airspace System |
| 26 January 2026 | 5 hours 48 minutes | Carrier |
| 30 October 2025 | 4 hours 57 minutes | National Airspace System |
| 2 December 2025 | 2 hours 48 minutes | Late-arriving aircraft |
Delay causes
Why DL 1122 runs late
Carriers report a reason for every delay minute they cause, in five DOT categories. The split below is by minutes, not by number of flights, so a handful of very long weather delays weighs as much as many short ones. It covers 5,535 reported delay minutes.
- 38%National Airspace System
- 32%Late-arriving aircraft
- 30%Carrier
- 0%Extreme weather
38% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 2,103 minutes out of 5,535, against a national NAS share of 21%. The split is drawn from 5,535 delay minutes reported on DL 1122.
Cancellations run at 3.56%, against 1.89% nationally. That is about one flight in 30 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and routes
What a delay on this flight costs
8.5% of arrivals land an hour or more late, close to the national 8.3%, so a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last a little over an hour, which a normal layover absorbs.
The 502 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty.
Every one of the 365 flights under DL 1122 in the data flew LGA to DTW. The number was not reused on any other city pair, which makes this a clean record of one route.
One caution: this is a thin sample. 365 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking DL 1122
For a booking, the cancellation rate is the figure to plan around on DL 1122: 3.56% of its 365 scheduled flights did not operate. A late arrival costs a little over an hour, but a cancellation costs the day, so leave a later option open.
Related
Where to go next
- LGA to DTW, every carrier and departure
- DTW to LGA, the return direction
- Delta Air Lines 1231 on the same route95.6%
- Delta Air Lines 1078 on the same route88.1%
- Delta Air Lines 999 on the same route73.9%
- Republic Airways 4598 on the same route63.6%
- Delta Air Lines 1014 on the same route69.3%
- LaGuardia (LGA) delay statistics
- Detroit Metropolitan Wayne County (DTW) delay statistics
- Delta Air Lines on-time record
- Every Delta Air Lines flight number with a record
- The most and least reliable flight numbers in the US
- Why the first flight of the morning is statistically safest
A flight number here means Delta Air Lines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.